429 papers
The subatomic world is a realm where matter behaves in ways that defy our everyday intuition, and this category explores the fundamental building blocks of our universe. From the intricate dance of quarks inside a proton to the strange properties of electrons, these studies reveal the deep rules that govern everything from the smallest particles to the largest stars.
At Gist.Science, we track every new preprint in this field as it appears on arXiv, ensuring you stay ahead of the curve. For each discovery, we provide both a clear, plain-language explanation of the core ideas and a detailed technical summary for those who want to dive deeper into the mathematics and methodology.
Below are the latest papers in Atom-Ph, offering fresh insights into the structure and behavior of the atomic scale.
This paper demonstrates that elastic scattering in a disordered environment induces local dephasing of a photoelectron, driving a transition from quantum to classical behavior in high-order harmonic generation by causing the wavepacket to localize around unstable periodic orbits, a phenomenon analogous to quantum scars observed in real-time dynamics.
The paper introduces SCULPT, an interactive web-based machine learning platform that utilizes advanced techniques like UMAP and adaptive confidence scoring to analyze high-dimensional multi-particle coincidence data from COLTRIMS experiments, thereby enabling efficient discovery of rare events and correlations in atomic and molecular physics.
This paper introduces a unified Floquet-based theoretical framework for large-momentum-transfer optical lattices that identifies practical operating regimes with significantly reduced losses and improved phase accuracy, thereby enabling next-generation precision atom interferometry for applications in fundamental physics and gravitational wave detection.
This paper reports the experimental realization of fractional Fermi seas in an excited one-dimensional Bose gas, evidenced by Friedel oscillations, thereby confirming exotic quantum states predicted by generalized exclusion statistics and opening new avenues for quantum thermodynamics and applications.
This paper establishes a new fidelity bound for neutral-atom entangling gates near Förster resonances by developing a two-eigenstate model that accounts for coupled interaction channels, demonstrating that properly managing exchange dynamics can improve predicted gate fidelities by up to two orders of magnitude and saturate a theoretical limit approximately 40% higher than previous estimates.
This paper reports the first high-resolution spectroscopy of ionic-core transitions in alkaline-earth Rydberg atoms, achieving a linewidth reduction of over two orders of magnitude through dynamical control of the Rydberg electron's orbit and validating the results against a single trapped ion reference to enable precise quantum control and sensitive probing of electron-core interactions.
This paper proposes a high-fidelity, tunable controlled-phase gate for optically trapped polar molecules that achieves resilience against dipole-dipole interaction fluctuations by utilizing global microwave pulses and single-qubit gates without populating coupled states, enabling fidelities exceeding 0.9999 under typical experimental conditions.
The paper proposes Granularity Noise Thermometry (GNT), a fluctuation-based optical scheme that determines temperature by measuring the linear scaling of excess noise in transmitted light with the photon-to-atom ratio, yielding distinct temperature dependencies for thermal vapors and cold atomic ensembles.
This paper proposes and experimentally demonstrates a "squeezing-induced stochastic resonance" method in a trapped ion system that amplifies weak electric-field signals by converting squeezed phase noise into amplitude fluctuations, achieving a 4.28 dB signal-to-noise ratio improvement over conventional noise-induced stochastic resonance without requiring an auxiliary noise source.
This paper presents a novel analytical framework for efficiently evaluating one- and two-center matrix elements of the free-particle Green's function over spherical and plane-wave-modulated Gaussian basis functions, providing compact closed-form expressions and recurrence relations essential for describing electron scattering and autoionization processes.